---
product_id: 102143227
title: "Ultralight UV Water Purifier, 3 oz"
brand: "steripen"
price: "MX$5800"
currency: MXN
in_stock: true
reviews_count: 13
category: "Steri Pen"
url: https://www.desertcart.mx/products/102143227-ultralight-uv-water-purifier-3-oz
store_origin: MX
region: Mexico
---

# 3 oz ultralight design Purifies 1L water in 90 seconds USB rechargeable, 20 treatments/charge Ultralight UV Water Purifier, 3 oz

**Brand:** steripen
**Price:** MX$5800
**Availability:** ✅ In Stock

## Summary

> 💧 Ultralight UV purity—hydrate smarter, hike farther!

## Quick Answers

- **What is this?** Ultralight UV Water Purifier, 3 oz by steripen
- **How much does it cost?** MX$5800 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/102143227-ultralight-uv-water-purifier-3-oz)

## Best For

- steripen enthusiasts

## Why This Product

- Trusted steripen brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Featherweight Power:** At just 3 oz, it slips effortlessly into your pack without weighing you down.
- • **Anywhere USB Recharge:** Charge from any USB source—ditch bulky batteries and stay powered on the trail.
- • **Rapid UV Purification:** Kills pathogens in 90 seconds with chemical-free UV-C light, preserving taste.
- • **Smart Water Activation:** Starts purifying instantly on contact—no buttons, no accidental battery drain.
- • **Trusted Outdoor Essential:** Backed by SteriPen’s proven UV tech, your go-to for safe water on every adventure.

## Overview

The SteriPen Ultralight is a compact, 3-ounce UV water purifier designed for backpackers and travelers who demand lightweight gear. It purifies 1 liter of clear water in 90 seconds using UV-C light, requires no buttons thanks to water-activated operation, and recharges via USB for up to 20 treatments per charge. Trusted SteriPen technology ensures safe, chemical-free drinking water on the go.

## Description

The SteriPen Ultralight is a 3-ounce pen-style UV water purifier built for thru-hikers, ultralight backpackers, and travelers who count every gram. The compact pen-style form factor drops into any pack pocket, vest pouch, or hydration bottle. Water-activated operation starts on contact so you cannot leave it running or forget to trigger it - no button to forget, no accidental battery drain inside your pack. UV-C light purifies clear water in 90 seconds (1L) or under a minute (0.5L) without chemicals or taste change. USB rechargeable - no more hunting for backpacking batteries in small mountain towns. A single charge delivers approximately 20 treatments, enough for a full multi-day solo trip. The 8,000-treatment UV lamp delivers years of reliable use. Best used with clear water sources; pre-filter cloudy water first for full effectiveness.

Review: I will never travel abroad without this!! - This was invaluable on my trip to Africa. I used it each and every day. I am immunocompromised and have to be vigilant with my health traveling abroad. I wish it worked a bit faster, but otherwise, zero critiques. Excellent product. Worth its weight in gold. I’ll never travel without it!
Review: excellent product !!! submerge the whole device in water - excellent, would puy same product again for family. YOU need to take the plastic cap off the tip and submerge the whole thing. Has the port with older charger port, trapezoid design.

## Features

- ULTRALIGHT UV WATER PURIFIER FOR BACKPACKING AND TRAVEL: At just 3 oz, the SteriPen Ultralight is the compact pen-style UV purifier in the lineup - drops into a pack pocket, vest pouch, or hydration bottle without adding bulk for thru-hikes, fast-packing, and solo trips
- WATER-ACTIVATED OPERATION, NO BUTTON TO FORGET: The Ultralight activates on contact with water and stops automatically, so it never runs down in your pack or wastes charge between uses. No accidental battery drain, no risk of leaving it on
- UV-C PURIFIES YOUR WATER IN 90 SECONDS: The 8,000-treatment UV lamp purifies clear water - no chemicals, no taste change, no waiting for tablets to dissolve
- USB RECHARGEABLE FOR THRU-HIKES AND TRAVEL: Charge via any USB power source - no hunting for backpacking batteries in small mountain towns. A single charge delivers about 20 treatments, enough for a multi-day solo trip. Pre-filter cloudy water for full effectiveness
- TRUSTED STERIPEN UV TECHNOLOGY: SteriPen UV technology delivers safe drinking water in 48 seconds without chemicals or bottles. The trusted standard for water treatment for travel, outdoor activities, and emergency preparedness

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07L52FLJV |
| Best Sellers Rank | #93,008 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #33 in Camping & Hiking Water Purifiers |
| Brand | SteriPen |
| Brand Name | SteriPen |
| Capacity | 1 liters |
| Container Type | Bottle |
| Customer Reviews | 4.1 out of 5 stars 230 Reviews |
| Global Trade Identification Number | 00604375204768 |
| Included Components | 1x UltraLight UV Water Purifier with a lid, Power Cable |
| Installation Type | Freestanding |
| Item Dimensions L x W x H | 1.4"L x 0.9"W x 5.1"H |
| Item Highlight | Water-Activated USB Rechargeable Pen, Purifies 1L in 90 Seconds, For Camping, Backpacking & Travel |
| Item Type Name | fishing reel,bait cast,fishing rod |
| Item Weight | 80 g |
| Manufacturer | Katadyn |
| Material | Plastic |
| Material Type | Plastic |
| Maximum Flow Rate | 0.01 liters_per_second |
| Model Name | ULL-MP-EFG |
| Model Number | ULL-MP-EF |
| Number of Items | 1 |
| Other Special Features of the Product | UV Disinfection |
| Part Number | ULL-MP-EFG |
| Power Source | Battery Powered |
| Product Dimensions | 1.4"L x 0.9"W x 5.1"H |
| Purification Method | Ultraviolet |
| Special Feature | UV Disinfection |
| UPC | 604375204768 |
| Warranty Description | Manufacturer Warranty |

## Product Details

- **Brand:** SteriPen
- **Capacity:** 1 liters
- **Included Components:** 1x USB cable, 1x UltraLight UV Water Purifier with a lid
- **Installation Type:** Freestanding
- **Material:** Plastic
- **Package Information:** Bottle
- **Power Source:** Battery Powered
- **Product Dimensions:** 1.4"L x 0.9"W x 5.1"H
- **Purification Method:** Ultraviolet
- **Special Feature:** UV Disinfection

## Images

![Ultralight UV Water Purifier, 3 oz - Image 1](https://m.media-amazon.com/images/I/51z1l7HjyvL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ I will never travel abroad without this!!
*by L***M on December 11, 2025*

This was invaluable on my trip to Africa. I used it each and every day. I am immunocompromised and have to be vigilant with my health traveling abroad. I wish it worked a bit faster, but otherwise, zero critiques. Excellent product. Worth its weight in gold. I’ll never travel without it!

### ⭐⭐⭐⭐⭐ excellent product !!! submerge the whole device in water
*by R***Z on August 9, 2026*

excellent, would puy same product again for family. YOU need to take the plastic cap off the tip and submerge the whole thing. Has the port with older charger port, trapezoid design.

### ⭐ Do not trust
*by S***K on November 20, 2024*

Took this on a Montana hunting trip, worked reasonably well. Then I trusted it on a backcountry Appalachian hunting trip and it failed. I was six + miles in and it was hot and suddenly I had no way to get water because it had lost its (full) charge. So I attached it to my portable charger and it wouldn’t charge. I would not trust this thing for water acquisition. Get a filter like a sawyer.

## Frequently Bought Together

- SteriPEN Ultralight UV Water Purifier
- Aquatabs 49mg Water Purification Tablets (30 Pack). Water Filtration System for Hiking, Backpacking, Camping, Emergencies, Survival, and Home-Use. Easy to Use Water Treatment and Disinfection.
- Sawyer Products SP129 Squeeze Water Filtration System w/ Two 32-Oz Squeeze Pouches, Straw, and Hydration Pack Adapter

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---

*Product available on Desertcart Mexico*
*Store origin: MX*
*Last updated: 2026-10-29*